Automatic heat-regulator.



A. P. BROOMELL.

AUTOMATIC HEAT REGULATOR.

APPLICATION FILED 0011.4. 1912.

Lmygjm Patented July 22, i913.

TTOR/VEVS ALBERT l. BROOMELL, Oli' YORK, PENNSYYLVANA.

AUTUMATXC HEAT-REGULATOR.

Speciicaton of lLetters Patent.

Patented .lilly 22, 1913..

Application ledllctober 4,;1912. Serial No.. 723,876.

a magnetic device which may open and controlvalves, such as the Valves of radiators, dampers, hot air lues and the like.

A further object of my invention is to provide meanscontrolled by a thermostat for operating the valves and for effectively.-

locking the valve in its closed position, thereby resisting pressure tending to open it-,but which will automatically Voperate, to release the valve and to withdraw it from itsseat when the temperature has reached arcertain point.

A' further object of Vmy invention is to provide a simple. devic-efor accomplishing the above named` objects, which is made of few parts, and which is therefore `not liable to v4easily .get out of order.

@ther objects and advantages will appear in the following specification, andthe. novel features-of the devicewill-be particularly pointed out lin the appended claims.

the valve of a` radiator.

My invention-is illustrated. in theaccomf panying. drawings forming part of this application in which- Figure 1 is a longitudinal section through the` device, Fig. 2 is a transverse. section through the device, Fig. 3 is a-plan view of the device, and. Fi 4. is a diagrammatic view showingl the e ectric connections.4

llncarryingfout my invention I make use of. a part of the heating'` apparatus, such. as Such a valve I have shown at 1 in` Figs. 1 and 2. This valve is designed to engage the valve seat 3, so as to cut olfV or establish communication with the interior 4 of the valve casing 5 on the opposite side of the valve seat from the valve 2.

Secured to the valve casing4 5 is a plate or cap 6 to which is secured at its ends the yokes 7 and 8 of the cylinders 9 and 10 respectively, screws 11 being provided for that purpose. Between the yokes 7 and 8 'and the cap or plate 6 are a series of thin spacing plates 'l2 whose purpose will be explained later. A. description of the construction of one solenoidwill suffice, since they are both preciselyalike. rllhe yoke 7 has 'secured to it by means of screws 13X an inwardly projecting extension 13, which has a recess 13b at one end. A cylinder 14 is supported on the extension 13, and is provided on its exterior with the insulating heads 15 and 16 respectively. Between these heads the Wire of the solenoid is wound.

The yoke 7 is provided with an Vopening having an insulating bushing 17 therein. A core 18 is provided for each solenoid, these cores being connected by means of a bar 19.

On each side of the bar 19 are the links 2O (see Fig. 2). The pivot pin, or. shaft, 21 also bears rollers 22 outside of the frame 20. The links -20 are pivotally connected by means of the pivot -pin 23 with the valve stem24 of the valve 2. This valve stem is provided with a packing gland 25.

Secured tothe yoke 8 are L-shaped members 26,- which aredesigned to. form abutment members for the rollers 22. Each yoke is provided with a pair of spring contacts such as those shown at 27 and 28 on the yoke 7 and 29 and 30 onfthe yoke 8. The ends off these contacts are normally together, and are turned outwardly as clearly shown inthe drawing.

Disposedupcn the bar 19 is an upwardly projectingmemben 31 at the top ofwhich is an insulating bar or. rod 32. Above the insulating bar 32 is a T-shaped member 33. The bar 32 is clamped. between. the loweranduppermembers 31 and 33-by means of ascrew 34..

Securedfto the yoke 7 by means of screws 35 is an end plate 36. A- similar end plate 37 is secured tothe yoke 8. A casing 38 is Vprovided andextends between the heads 36 and 37. This casing is provided with a pair of openings 39 and 40. The T-shaped member 33 bears on one of its laterally extending arms the word shut as shown at 39 in Fig. 3,.whilethe other arm bears the wor open 7 as shown at 40X in Fig. 3.

lnFig. 4l have shown the circuit connections by means of which the device is operated'. These consist cfa thermostat 41, battery 42, and an insulating plate 43 having binding posts 44, 45 and 46.

A description of the operation of the circuits will be best understood by a statement of the operation of the device.

i The thermostat 41 may be of any approved type to operate at anypredetermined temperature. In Fig. 4, I have shown the thermostat as being in engagement with the contact 47 Battery current will now flow from' the battery 42 through 41, 47, 48, 44, 49, solenoid 9, 27, 28; 50, 45, 51, and back tobattery. This will energize the solenoid 9y and draw the core into the position shown in Fig. 1. Just at the end of the movement of the core, the insulating bar 32 will enter'between and separate the spring contacts 27 and 28, thereby cutting oi the current. .The valve 1 will be opened, and

' will stay open until the temperature 1ncreases suiiiciently to move the thermostat over against the opposite contact 52. When the thermostat member 41 is in engagement with the contact 52 the current will ow from battery 42, through`41, 52, 53, 46, 54, solenoid 10, 29, 30, 50, 51 to battery. This will energize the solenoid 1() and the core will be .drawn away from the solenoid 9. At the end of its movement the insulating member V32 will enter between and separate the spring contacts 29 and 30, thereby cutting off the current.

The movement of the core toward the solenoid 10 will cause the valve to engage its seat. The links.22 willthen be in the dotted line position shown in Fig. 1. Pressure against the valve will tend to be resisted by the abutment member 26, and therefore the valveis positively held against pressure. When, however, the temperature has so far decreased as to cause the movement of the thermostat, the solenoid 9 will move the core as heretofore explained. This movement is faciliated by means of the rollers 22, which tend to decrease the friction so as to ermit the movement of the core to open t e valve. As the T-shaped member 33 is shifted, it brings the words shut and open before the respective openings 39c and 40", so that the user of the device maIy lways know the osition of the valve.

t will be noted that 1n my device the current is cut olf as soon as the solenoid has done its work. There is therefore a vr'eat economy in current, because 'the period between the vibrationnfrom one contact to another may represent a considerable time, and if the current were on the solenoids it would not only resultinwaste of current, but in an undue extension of the parts, due to the heating of the coils and would interfere with the proper operation .ofthe device. The feature of the positive locking of the valve I re rd as very important. This permits the evice to be usedwi'th systems having either high or lowI ressure. It will be 35 noted that the valve 1s moved'by the solenoid regardless of the pressure. Thus when it is used with a system having very low pressure, the valve is positively opened, as effectively as if it were used on a system having pressure behind the valve. In order that the valve 1 may be brought into position upon its seat, I provide the spacing plates 12 which may be made of any suitable material. These plates may be used so as to bring the valve to its proper position. As the valve becomes worn, adJustment may be necessary, and certain of these parts may be removed or replaced in order to bring the valve into its proper position for closing at the right moment.

I claim:

1. The combination with a thermostat and 'i a source of current, device controlled by the thermostat, said valve operating device vcomprising a pair of solenoids each provided with a core, ya rigid member connecting said cores, connections between the valve stem and said rigid connecting member for operating the valve, said connections comprising links pivotally -secured to said rigid connecting member at one end and to the valve stem at the other, friction rollers carried by the pivotal connection of the links with the rigid member, andan abutment member arranged to be engaged by the periphery of said rollers.

2. In a heat regulating device, the combiof a valve operating' nation with a valve having a valve stem,

of a pair of solenoids secured to the valve casing, movable cores for said solenoids, a bar rigidly connecting said cores together, links pivotally connecting said rigid bar with. said valve stem,r a pair of normally closed spring contacts carried by leach solenoid, an insulating plug carried by said bar and arranged to enter between and to separate either pair of said closed contacts, an interior casing provided with openings, and an indicating device carried by said insulating plug and having portions arranged to re ister with the openingsto indicate the position .of the bar.

3. In a heat regulating device, a valve casing, a pair of yokes secured to said valve casing, a pair of solenoids carried' by said yokes, a core for each solenoid, a common connecting bar for said cores, a valve in said valve casing having a slidable valve stem, a pair of spring contacts carried by one of said solenoids, an insulating plug carrled by said bar and arranged to enter between and to separate said pair of contacts and to be frictio-nally held by saidcontacts, and means connecting the valve stem and the common connecting bar for operating the Loeaaie connecting bar for said cores, a valve in said valve casmg having a slidable valve stem, a pair ot' spring contacts carried by one of said solenoids, an insulating plug carried by said bar and arranged to enter between and to separate said pair of contacts and to be frictionally held by said contacts, and means connecting the valve stem and the common connecting bar for operating the valve through the motion of the bar, said means comprising links secured to said valve stem at one end and to the common connecting bar at the other and arranged to be brought into alinement with the valve stem when the insulating core has entered between the spring Contactmembers.

5. ln a'heat regulating device, a valve easing, a pair of yokes secured to said valve casing, a pair of solenoids carried by said yokes, a core for each solenoid, a common connecting bar for said cores, a valve in said valve casing having a. sildable valve stem, a pair of spring contacts carried by one of said solenoids, an insulating plug carried by said bar and arranged to enter between and Ato separate said pair of contacts and to be frictionally held by said contacts, means con* necting the valve stem and the common connecting bar for operating the valve through the motion ot the bar, said means comprising links secured to said valve stern at one end and to the common connecting bar at the other end and arranged to be brought into alinement with the valve stem when the insulating core has entered between the spring contact members, and means for relieving the connecting rod from end thrust of the links when the latter are. in alinernent with the valve stem.

6. ln a heat regulating device, a valve casing, a pair of yokes secured to said valve casing, a pair of solenoids carried by said yokes, a core for each solenoid, a common connecting bar for said cores, a valve in.

said valve casing having a slidable valve stem, a pair of spring contacts carried by said bar and arranged toenter between and to separate said pair of contacts and to be frictionally held by said contacts, means connecting the valve stem and the common connecting bar for operating the valve through the motion of the bar, said means comprising links secured to said valve stern at one end and to the common connecting bar at the other end and arranged to be brought into alinement with the valve stem when the insulating core has entered between the spring contact members, and means for relieving the connecting rod from end thrust of the links when the latter are in alinement with the valve stem, said means comprising an l shaped abutment member secured to one of said solenoids.

ALBERT l?. BROOMELL.

'Vitnesses:

H. E. BOLLINGER, N. H. HALL. 

